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THE CO-ADSORPTION OF BENZENE AND CO ON Co(0001)

GONZÁLEZ, ESTELA A.; JASEN, PAULA V.; PIERINI, JORGE; … - In: Surface Review and Letters (SRL) 16 (2009) 05, pp. 749-755

The co-adsorption of carbon monoxide and benzene on Co(0001) has been studied using density functional calculations. We used the ordered $(\sqrt 7 \times \sqrt 7\/)\ R19^{\circ}$ surface unit cell. A comparison of the co-adsorption with CO and benzene two-dimensional networks is also given. The...

Persistent link: https://www.econbiz.de/10008474834

Assessment of Crystal Morphology on Uptake, Particle Dissolution, and Toxicity of Nanoscale Titanium Dioxide on Artemia Salina

Johnson, Martha S.; Ates, Mehmet; Arslan, Zikri; Farah, … - In: Journal of Nanotoxicology and Nanomedicine (JNN) 2 (2017) 1, pp. 11-27

investigated. Artemia salina were exposed to anatase, rutile and mixture polymorphs of n-TiO2 in seawater. Short-term (24 h) and …. Anatase form had highest accumulation followed by mixture and rutile. Presence of food greatly reduced accumulation. n-TiO2 … 96h exposure in the order of anatase>mixture>rutile. Mortality and oxidative stress levels increased with increasing n …

Persistent link: https://www.econbiz.de/10012049190

SIZE-DEPENDENT ELASTIC PROPERTIES OF Ni NANOFILMS BY MOLECULAR DYNAMICS SIMULATION

YANG, ZHENYU; ZHAO, YA-PU - In: Surface Review and Letters (SRL) 14 (2007) 04, pp. 661-665

Size-dependent elastic properties of Ni nanofilms are investigated by molecular dynamics (MD) simulations with embedded atom method (EAM). The surface effects are considered by calculating the surface relaxation, surface energy, and surface stress. The Young's modulus and yield stress are...

Persistent link: https://www.econbiz.de/10005080647

IN SITU SCANNING TUNNELING MICROSCOPY TOPOGRAPHY CHANGES OF GOLD (111) IN AQUEOUS SULFURIC ACID PRODUCED BY ELECTROCHEMICAL SURFACE OXIDATION AND REDUCTION AND RELAXATION PHENOMENA

PASQUALE, M. A.; NIETO, F. J. RODRÍGUEZ; ARVIA, A. J. - In: Surface Review and Letters (SRL) 15 (2008) 06, pp. 847-865

The electrochemical formation and reduction of O-layers on gold (111) films in 1 m sulfuric acid under different potentiodynamic routines are investigated utilizing in situ scanning tunneling microscopy. The surface dynamics is interpreted considering the anodic and cathodic reaction pathways...

Persistent link: https://www.econbiz.de/10005050546

GROWTH MODE AND ELECTRONIC STRUCTURE OF SILVER ON ${\rm ZnO}(10\overline{1}0)$

OZAWA, K.; SATO, T.; KATO, M.; EDAMOTO, K. - In: Surface Review and Letters (SRL) 13 (2006) 02, pp. 227-233

The growth mode and electronic structure of the vapor-deposited Ag overlayer on the ${\rm ZnO}(10\overline{1}0)$ surface is investigated by angle-resolved photoemission spectroscopy utilizing synchrotron radiation. The coverage dependent measurements of the two-dimensional band structure by the...

Persistent link: https://www.econbiz.de/10004977463

ELECTRONIC STRUCTURE OF AgCd2GaS4

ATUCHIN, V. V.; KESLER, V. G.; PARASYUK, O. V. - In: Surface Review and Letters (SRL) 14 (2007) 03, pp. 403-409

The electronic structure of AgCd2GaS4 crystal has been studied with X-ray photoelectron spectroscopy (XPS). Chemical bonding effects have been observed by comparative analysis of binding energies of element core levels and crystal structure of AgCd2GaS4 and several ternary sulfides. It has been...

Persistent link: https://www.econbiz.de/10004977524

ELECTRONIC PARAMETER AND SUBBAND STRUCTURE VARIATIONS DUE TO AN EMBEDDED AlN POTENTIAL BARRIER LAYER IN Al0.3Ga0.7N/GaN HETEROSTRUCTURES

HAN, S. M.; KIM, S. Y.; CHOO, D. C.; JUNG, J. I.; KIM, T. W. - In: Surface Review and Letters (SRL) 14 (2007) 04, pp. 807-811

Carrier density of a two-dimensional electron gas (2DEG) in Al0.3Ga0.7N/GaN and Al0.3Ga0.7N/AlN/GaN heterostructures was investigated by performing Shubnikov-de Haas (SdH) measurements. The angular-dependent SdH measurements and the fast Fourier transformation results for the SdH data indicated...

Persistent link: https://www.econbiz.de/10004977527

Efficient non-vertical interband transitions in porous silicon

Cruz, M.; Beltrán, M.R.; Wang, C.; Tagüeña-Martínez, J. - In: Physica A: Statistical Mechanics and its Applications 241 (1997) 1, pp. 382-385

In this work, we study an inhomogeneous material, porous silicon (PS), using a supercell model and an s p3 s∗ tight-binding Hamiltonian. The interband non-vertical transitions are studied in two schemes, which consider different contributions within the intra-atomic approximation. The...

Persistent link: https://www.econbiz.de/10011058288

Replacive ordering in alloys

Banerjee, S.; Arya, A.; Das, G.P. - In: Physica A: Statistical Mechanics and its Applications 270 (1999) 1, pp. 215-225

Replacive ordering can occur in an alloy in a continuous mode by the development and amplification of concentration waves of appropriate wave vectors, k. Such processes known as spinodal clustering (k∼〈000〉) and spinodal ordering (k defining the relevant superlattice structure) become...

Persistent link: https://www.econbiz.de/10011059943

On the magnetocaloric effect in d-metal pnictides

Fruchart, D.; Allab, F.; Balli, M.; Gignoux, D.; Hlil, E.K. - In: Physica A: Statistical Mechanics and its Applications 358 (2005) 1, pp. 123-135

Recently, the potentialities to develop large magnetocaloric contributions close to room temperature were pointed out in MnFe(As,P). Here, we aim to better underline the main characteristics of the magnetoelastic effect exhibited by many of the d-metal pnictides with formulae MM′X. We have...

Persistent link: https://www.econbiz.de/10011060081